Gregory Green (S10E01)
S10E01
Gregory Green concealed the murder of his first wife and their unborn child. In 2016, he escalated his brutality by taking the lives of his second wife's four children—two with gas and two with a firearm—repeating his horrific pattern of violence.
Show
World's Most Evil Killers
Episode
S10E01
Air Date
Nov 25, 2025